Question

I have a custom UITabvleViewCell that has a UIImageView in it. I can set the image fine when the cell is setup in cellForRowAtIndexPath (though I don’t) however under certain conditions I need to change the image and have been doing so with the following code.

-(void)updateCellForUPC
{
    AppData* theData = [self theAppData];

    NSInteger cellIndex;
    for (cellIndex = 0; cellIndex < [productArray count]; cellIndex++) {

      NSString *cellUPC = [NSString stringWithFormat:@"%@",[[productArray objectAtIndex:cellIndex] objectForKey:@"UPC"]];

        if ([cellUPC isEqualToString:theData.UPC]) {

            OrderDetailCell *activeCell = [[OrderDetailCell alloc] init];
            activeCell = (OrderDetailCell *) [orderDetailTableView cellForRowAtIndexPath:[NSIndexPath indexPathForRow:cellIndex inSection:0]];

            UIImage* image = [UIImage imageNamed:@"checkmark.png"];
            activeCell.statusImageView.image = image;
            activeCell.checked = YES;
        }
    }
}

This works and the image gets updated however when you scroll the cell off the screen and back onto the screen the image is reset!

I need it to *stick with the new image.

Answer 1

This is not recommended as you are not gaining the benefit of the dequeue mechanism for unused cells. Consider doing this when you create the cell, or create a mechanism that knows which cells this should be done to.